Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous AbstractSynthesis of the dodecapeptide-alpha mating factor of Saccharomyces cerevisiae    Next AbstractPlants-nematodes-microbes crosstalk within soil: A trade-off among friends or foes »

J Chem Ecol


Title:Push-Pull: Chemical Ecology-Based Integrated Pest Management Technology
Author(s):Khan Z; Midega CA; Hooper A; Pickett J;
Address:"International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772, Nairobi, 00100, Kenya. zkhan@icipe.org. International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772, Nairobi, 00100, Kenya. Biological Chemistry and Crop Protection Department, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK"
Journal Title:J Chem Ecol
Year:2016
Volume:20160709
Issue:7
Page Number:689 - 697
DOI: 10.1007/s10886-016-0730-y
ISSN/ISBN:1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:"Lepidopterous stemborers, and parasitic striga weeds belonging to the family Orobanchaceae, attack cereal crops in sub-Saharan Africa causing severe yield losses. The smallholder farmers are resource constrained and unable to afford expensive chemicals for crop protection. The push-pull technology, a chemical ecology- based cropping system, is developed for integrated pest and weed management in cereal-livestock farming systems. Appropriate plants were selected that naturally emit signaling chemicals (semiochemicals). Plants highly attractive for stemborer egg laying were selected and employed as trap crops (pull), to draw pests away from the main crop. Plants that repelled stemborer females were selected as intercrops (push). The stemborers are attracted to the trap plant, and are repelled from the main cereal crop using a repellent intercrop (push). Root exudates of leguminous repellent intercrops also effectively control the parasitic striga weed through an allelopathic mechanism. Their root exudates contain flavonoid compounds some of which stimulate germination of Striga hermonthica seeds, such as Uncinanone B, and others that dramatically inhibit their attachment to host roots, such as Uncinanone C and a number of di-C-glycosylflavones (di-CGFs), resulting in suicidal germination. The intercrop also improves soil fertility through nitrogen fixation, natural mulching, improved biomass, and control of erosion. Both companion plants provide high value animal fodder, facilitating milk production and diversifying farmers' income sources. The technology is appropriate to smallholder mixed cropping systems in Africa. Adopted by about 125,000 farmers to date in eastern Africa, it effectively addresses major production constraints, significantly increases maize yields, and is economical as it is based on locally available plants, not expensive external inputs"
Keywords:Agriculture Animals Climate Change *Ecological and Environmental Phenomena Pest Control/*methods Pheromones/pharmacology Allelopathy Cereal crops Parasitic striga Semiochemicals Stemborer pests;
Notes:"MedlineKhan, Zeyaur Midega, Charles A O Hooper, Antony Pickett, John eng BB/E015794/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom BB/H001700/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom Review 2016/07/10 J Chem Ecol. 2016 Jul; 42(7):689-97. doi: 10.1007/s10886-016-0730-y. Epub 2016 Jul 9"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 21-11-2024